OPF stands for Open Packaging Format, which is an EPUB eBook specification.
The OPF file stores data on the ebook, such as the title of the book, the language in which it was written, its author and the any other contributors. These files are often used in conjunction with EPUB archives, to store metadata on the book.
.opf File Extension
Developer:
IDPF
File category:
What are opf files & how to open them - Open Packaging Format File
File category:
Developer:
IDPF